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Python

Smith Thapa
Smith Thapa
7,023 Points
Posted by Smith Thapa
Smith Thapa
7,023 Points

Didn't get the right string output !

Question: Let's use str to turn Python code into Morse code! OK, not really, but we can turn class instances into a representation of their Morse code counterparts. I want you to add a str method to the Letter class that loops through the pattern attribute of an instance and prints out "dot" for every "." and "dash" for every "". Join them with a hyphen. I've included an S class as an example (I'll generate the others when I test your code) and it's __str_ output should be "dot-dot-dot".

morse.py 
class Letter:
    hyphen_code=[]

    def __init__(self, pattern=None):
        self.pattern = pattern

    def __str__(self):
        for x in self.pattern:
            if x ==".":
                self.hyphen_code.append("dot")
            elif x=="_":
                self.hyphen_code.append("dash")
        return "-".join(self.hyphen_code)



class S(Letter):
    def __init__(self):
        pattern = ['.', '.', '.']
        super().__init__(pattern)

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Try using a local variable instead of a class attribute.

You don't nee to hyphen_code to be a class attribute (which would retain it's value between uses), so just make it be a local variable to the str method. Move the initialization into the method itself, and then remove the "self." prefix from each reference.